FORT COLLINS, Colo. (CBS4) – Police in Fort Collins are looking for teenaged suspect who they believe stole a puppy during an animal rescue adoption event.

According to All Aboard Animal Rescue Executive Director Ashley Dinger, a 16-year-old girl is suspected of stealing the puppy from “Adoptapalooza,” a doggy adoption event held in Fort Collins on Saturday.

The rescue staff said the girl requested to adopt a 5-month-old Chihuahua named Siberia, but she was too young and her request was denied. According to a police document, the girl then tried to get an adult man to fill out the proper paperwork, but the man wasn’t the girl’s parent or guardian and the paperwork was denied.

They believe the girl then took the puppy and paperwork after telling staff she was going to bring the paperwork to her mother. The girl never returned and the rescue doesn’t have her name because she took the paperwork.

The adoption event was held at Pet Club located at 2226 East Harmony Road and featured 86 dogs that were up for adoption.

All Aboard Animal Rescue wants the puppy back. They described the girl as 5-foot-4 with light brown or dirty blonde hair, light features and a medium build.